Halogen-free scaling powder

A flux and flux technology, applied in the field of halogen-free flux and no-cleaning, can solve the problems that the flux cannot be widely used, affect the health of operators, and affect the quality of electronic products. No irritating smell, little smoke effect

Inactive Publication Date: 2009-04-22
廖龙根
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flux is corrosive to electronic components and directly affects the quality of electronic products. During soldering, because rosin volatilizes at high temperature, the smell is very strong, which affects the health of operators. Rosin residue is left on the surface, and it needs to be clea...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0018] Specific embodiment: the mass percent of each composition among the present invention is as follows: organic solvent 99~99.4%, rosin resin and derivative thereof 0.015~0.025%, synthetic resin surfactant 0.05~0.15, other: trace.

[0019] In summary, the present invention is colorless and transparent, does not pollute the environment, has no irritating odor, has little smoke, bright solder joints, strong wetting power, excellent solderability, less residue on the board surface after welding, clean board surface, and ionic Low pollution, no cleaning after welding, high surface insulation resistance, in line with environmental protection requirements, can meet the no-cleaning requirements of printed component boards, and has great market competitiveness.

[0020] The invention is suitable for high-end circuit boards such as computer main boards and various electronic receivers, and is suitable for customers who have higher requirements on the cleanliness of the board surface...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a soldering flux for welding in the electronic industry, in particular to a no-clean and halogen-free soldering flux. The soldering flux consists of organic solvent, abietic resin and derivate of the abietic resin, synthetic resin surface active agent, organic acid activated agent, anticorrosive agent, latent solvent and film forming agent. The soldering flux has the advantages of transparency, no environmental pollution, no penetrating odor, little smoke fume, shining welding spot, strong wetting power, excellent weldability, few residues left on the plate surface after welding, clean plate surface, low ionic contamination, unnecessary cleaning after welding and high surface insulation resistance, and conforms the environmental protection requirements, meets the no-clean requirement of a printing component plate and has stronger market competitiveness.

Description

Technical field: [0001] The invention relates to a flux used for welding in the electronic industry, in particular to a no-cleaning, halogen-free flux. Background technique: [0002] Flux is usually a mixture of rosin as the main component, which is an auxiliary material to ensure the smooth progress of the soldering process. Welding is the main process in electronic assembly. Flux is an auxiliary material used in welding. The main function of flux is to remove the oxides on the surface of the solder and the base material to be welded, so that the metal surface can reach the necessary cleanliness. It prevents re-oxidation of the surface during soldering, reduces the surface tension of the solder, and improves soldering performance. The quality of flux performance directly affects the quality of electronic products. [0003] In recent decades, in the soldering process of electronic products, rosin resin flux mainly composed of rosin, resin, halide-containing active agent, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23K35/36
Inventor 廖龙根
Owner 廖龙根
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap